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## Slicer
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### Instructions
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Create a function named `slice` that works like `Array.slice()` and `String.slice()`.
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It takes 3 arguments:
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- string or array to process.
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- starting index.
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- optional ending index.
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### Notions
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- [Array.slice](https://devdocs.io/javascript/global_objects/array/slice)
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### Code provided
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> The provided code will be added to your solution, and does not need to be submitted.
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```js
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Array.prototype.slice = undefined
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String.prototype.slice = undefined
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```
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